Hourly interval min days per week

Wizard · October 09, 2015, 03:36:14 PM

Hi!
I know there is an option for setting an hourly interval maximum days per week. Can a similar thing be achieved with minimum days? I would like all teachers to teach at least once or twice every week in the last hour.

Liviu Lalescu · October 09, 2015, 03:48:05 PM

In this particular case (last hour), you can use the constraint activities occupy max time slots from selection.

Wizard · October 09, 2015, 03:59:32 PM

I'm really sorry, I don't understand what I should do. Is this from "a set of activities occupies max times slots from selection"? What should I do next?

Liviu Lalescu · October 09, 2015, 04:01:13 PM

Please read the constraint's help and come back here if you still don't understand.

Wizard · October 09, 2015, 04:24:35 PM

I understand now, thank you!

alex · October 20, 2015, 05:45:19 PM

Quote from: Liviu Lalescu on October 09, 2015, 03:48:05 PM
In this particular case (last hour), you can use the constraint activities occupy max time slots from selection.

Liviu, I think that this option is going to result in AT MOST and not AT LEAST two (for example) lessons at the last hours... I had a similar problem and I used this option for generating a timetable with AT MOST three lessons at the first hours for a teacher. Or maybe... I didn't understand something correctly...

Liviu Lalescu · October 20, 2015, 05:54:42 PM

Use an inverse: say teacher T has 20 hours in a week with 5 days and 6 hours per day. You want T to have at least 2 activities in the last hour (hour 6). Then add a constraint with all activities of this teacher, selected slots = all but last hours (25 slots), maximum occupied = 20-2 = 18. I hope I am not mistaking.